Spectroscopic characterization on the biosorption and bioreduction of Ag(I) by Lactobacillus sp. A09

被引：56

作者：

Fu, JK ^{[1
]}

Liu, YY

Gu, PY

Tang, DL

Lin, ZY

Yao, BX

Weng, SZ

机构：

[1] Xiamen Univ, State Key Lab Phys Chem Solid Surface, Xiamen 361005, Peoples R China

[2] Xiamen Univ, Dept Biol, Xiamen 361005, Peoples R China

[3] Xiamen Univ, Dept Chem, Xiamen 361005, Peoples R China

来源：

ACTA PHYSICO-CHIMICA SINICA | 2000年 / 16卷 / 09期

关键词：

Lactobacillus; silver; biosorption; bioreduction; characterization;

D O I：

10.3866/PKU.WHXB20000904

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Some characteristics of Ag+ biosorption and bioreduction by Lactobacillus sp. A09 biomass were reported. The optimum pH value of Ag+ biosorption by strain A09 was 4.5. Temperature(6 similar to 50 degrees C) did not affect the biosorption. The biosorptive efficiency (91%) and biosorptive capacity(Ag(+)125 mg . g(-1) dry weight biomass) were achieved under the conditions of Ag(+)100 mg . L-1, biomass 800 mg . L-1, pH 4.5 and 30 degrees C for 24 h contact, TEM analysis indicated that A09 biomass could reduce Ag+ to Ag-o as Ag particles on the surface of cells. IR spectroscopy showed that -CO2- and -HN -C = O on the surface of cells may involve in the precession for adsorbing Ag+.

引用

页码：779 / 782

页数：4

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